872415232
domain: N
Appears in sequences
- a(n) = n*2^(n-1).at n=26A001787
- a(n) = 13*2^n.at n=26A005029
- Length of longest trail (i.e., path with all distinct edges) on the edges of an n-cube.at n=26A005985
- a(n) = n*4^n.at n=13A018215
- Determinant of the symmetric n X n matrix A defined by A[i,j] = |i-j| for 1 <= i,j <= n.at n=26A085750
- Start with the sequence [1, 1/2, 1/3, ..., 1/n]; form new sequence of n-1 terms by taking averages of successive terms; repeat until reach a single number F(n); a(n) = denominator of F(n).at n=25A090634
- Expansion of g.f. (1-4*x+5*x^2)/(1-2*x)^2.at n=27A097067
- 2^(n-1) times coefficient of x in (1+x)^n mod U(n,x), U the Chebyshev polynomials.at n=25A099590
- Binomial transform of A004526.at n=27A139756
- Inverse binomial transform of A143025, assuming offset zero there.at n=28A173435
- Denominators of mass formula for connected vacuum graphs on 2n nodes for a phi^3 field theory.at n=26A226261
- The hyper-Wiener index of the hypercube graph Q(n) (n>=2).at n=11A228310
- Number of (possibly overlapping) occurrences of the subword given by the binary expansion of n in all binary words of length n.at n=30A228612
- Row sums of A146565.at n=30A259098
- Sum of the degrees of asymmetry of all binary words of length n.at n=27A274497
- a(n) = 2^(n - 1) (n - mod(n, 2)).at n=25A291938